The /var filesystem of the controller node is running out of space

I notice that after using the IBM Cloud Orchestrator 2.5.0.2 for a period of time, the /var file system of my controller node runs out of space very quickly. And now the /var filesystem has reached 100% capacity which is now broken the ICO/ICMO system - cannot login or restart any openstack services.

I have tried deleting the past logs, but it does not affect much since the majority of the space is consumed by